Shipping Container Weight Limits — Complete Guide 2026

Every shipping container has a maximum payload weight — the maximum cargo weight it can safely carry. Exceeding this limit leads to container damage, port fines, delayed shipments, and safety risks. This guide covers everything you need to know.

Container Weight Limits — All Types

Container Type	Max Payload	Tare Weight	Max Gross Weight
20ft Standard	28,000 kg	2,200 kg	30,200 kg
20ft Reefer	27,700 kg	2,900 kg	30,600 kg
40ft Standard	26,500 kg	3,700 kg	30,200 kg
40ft High Cube	26,460 kg	3,940 kg	30,400 kg
40ft Reefer HC	27,700 kg	4,800 kg	32,500 kg

Note: The 20ft container has a higher payload capacity than a 40ft container. This is counterintuitive but important — for very heavy cargo, a 20ft may be the right choice even if volume is not fully utilised.

How to Calculate Your Total Cargo Weight

Total cargo weight = (carton weight × number of cartons) + pallet weight × number of pallets

Component	Example
Carton weight	15 kg per carton
Number of cartons	1,000 cartons
Cargo weight	15,000 kg
Pallet weight (10 pallets × 25 kg)	250 kg
Total cargo weight	15,250 kg
Container max payload (20ft)	28,000 kg
Available margin	12,750 kg ✅

What Happens If You Overload a Container?

Port rejection: Overweight containers are rejected at the port and must be repacked before loading
Financial penalties: Fines for incorrect VGM (Verified Gross Mass) declarations
Shipping delays: Reloading takes time and may miss the vessel sailing
Container damage: Excess weight can damage the container floor and corner castings
Road transport issues: Many countries have strict gross vehicle weight limits

VGM (Verified Gross Mass) — SOLAS Requirement

Since 2016, SOLAS (Safety of Life at Sea) regulations require all packed containers to have a Verified Gross Mass (VGM) declaration before they can be loaded onto a vessel. The VGM = total cargo weight + pallet weights + container tare weight.

There are two methods to obtain VGM:

Method 1: Weigh the packed container on a certified scale
Method 2: Add up the individual weights of all items (cartons + packing materials + pallets)

Weight Distribution Within the Container

Even if total weight is within limits, poor distribution causes problems:

Heavy cargo at the rear makes containers difficult to handle with reach stackers
Front-heavy containers strain the container floor near the front walls
Uneven left-right distribution causes containers to tilt in cranes

Best practice: place heaviest pallets at the front (cab end), distribute weight evenly left-right, and keep the centre of gravity low.

Check Weight and Volume Before Loading

ContainerLoad calculates both carton count and total weight automatically

Try ContainerLoad Free →

FAQ

What is the maximum weight in a 20ft container?

A 20ft standard container has a maximum payload of 28,000 kg (28 tonnes). This is the maximum cargo weight you can load, not including the container's own tare weight of approximately 2,200 kg.

Why does a 40ft container have a lower payload than a 20ft?

A 40ft container is heavier (tare weight ~3,700 kg vs ~2,200 kg for 20ft), and international road transport regulations limit gross vehicle weight. The result is a lower available payload despite the larger container.

What is VGM in shipping?

VGM stands for Verified Gross Mass — the total weight of a packed container including cargo, packaging, and the container itself. SOLAS regulations have required VGM declaration for all containers since July 2016.